Key Features
- All-Plastic Construction: No metal parts contact the fluid (preventing corrosion or contamination).
- High Pressure Rating: Many are rated to 100–125 psi (7–8 bar) for standard cartridges.
- Seamless Design: One-piece, seamless bowls (e.g. as in Rosedale’s designs) improve strength.
- Food/Pharma Grade: Virgin polypropylene (food-grade) ensures no leachables – critical for semicon and pharma.
- Ease of Maintenance: Quick-release clamps or threaded caps for fast cartridge changes.
Benefits
- Contamination-Free: Ideal for ultra-pure water or chemical service; fluid stays “free of contamination”.
- Corrosion Proof: Withstands corrosive chemicals (acids, alkalis) and chlorine in water.
- Lightweight & UV-Stable: Easier to install than stainless housings, and UV inhibitors protect against sunlight on rooftops.
- Low Thermal Conductivity: Keeps filtrate warmer/cooler as it flows through compared to metal housings.
Applications
- Semiconductor & Pharma: Purifying ultra-pure process water (high purity PP materials are used).
- Laboratory Water Systems: Pre-RO and final filtration housings.
- Chemical Processing: Filtration of corrosive solvents, acids or bases.
- Residential/Commercial Water: Sediment and carbon filter housings for drinking water systems.
Technical Specifications
- Material: 100% virgin polypropylene or PVC, often FDA/NSF certified.
- Connections: Threaded ports (NPT, BSP) or flanged for higher flow.
- Temperature: PP typically 0–80°C continuous (higher momentary); PVC 0–60°C.
- Certifications: Many meet NSF/ANSI 61 for potable water, and 372 for lead-free compliance.
Unique Selling Points (USPs)
- Ultra-Clean Design: As Porvair notes, all-PP housings keep liquids “totally free of contamination” – essential for critical processes.
- One-Piece Body: Seamless construction (one molded part) avoids leaks at seams, boosting reliability.